McCleary, a Pennsylvania native, started his company in the wake of the 2012 election – he was the polling director of the National Republican Congressional Committee – leaving Washington, D.C., for the state capital.

The latest poll, released Monday by Harper polling, showed McGinty leading Sestak by six percentage points.

Katie McGinty rode a wave of endorsements and financial support to be Pennsylvania Democrats’ choice to take on first-term Republican Sen. Pat Toomey in the fall.

Democratic voters on Tuesday will decide the party’s nominees for Senate in Maryland and Pennsylvania, two races that have featured hard-fought battles.

The Democratic Senate race in Pennsylvania has tightened as the party’s establishment seeks to topple the insurgent candidate Tuesday.

Katie McGinty is now leading former Rep. Joe Sestak in Pennsylvania’s Senate Democratic primary race a day before voters cast their ballots, according to new poll.

Sen. Bernie Sanders’ vote 11 years ago to give the firearms industry broad protections from liability has brought on a Sandy Hook guilt trip ahead of today’s Democratic primary in Connecticut.

Call it an un-endorsement by the Philadelphia Federation of Teachers.

A Harper Polling poll just days before the election had Ms. McGinty up 6 points.

Seven of 10 American voters do not support allowing crime victims to sue firearm manufacturers and retailers when firearms they made or sold lawfully after background checks are used illegally in crime.

Katie McGinty has overtaken Joe Sestak in the hotly contested U.S. Senate race, according to a public opinion poll conducted amid a flurry of TV ads in advance of Tuesday's primary.

Josh Shapiro will head into tomorrow’s Democratic AG primary full of confidence, with the latest Harper Poll giving him an 18-point lead over his closest challenger.

Katie McGinty leads her first poll in the Senate Democratic primary.

Hillary Clinton is poised for a big win in tomorrow’s PA Democratic presidential primary.

Katie McGinty has surged ahead of Joe Sestak, according to a new poll, as Pennsylvania Democrats enter voting booths Tuesday to settle the contentious U.S. Senate primary race.

A new poll shows that more than 70 percent of Americans support keeping legal protections for gun makers and dealers whose products are used in crimes.

A recent Harper Polling survey found Mr. Shapiro leading with a third of Democratic voters.

Democrats in Washington are tripling down on their bet that Katie McGinty is a better option than Joe Sestak to be their nominee to challenge Sen. Patrick J. Toomey (R-Pa.) this fall, launching a low-seven-figure campaign ahead of the April 26 primary.

A new Harper Polling survey of the Pennsylvania primary contest has Sestak earning 41 percent of the vote to McGinty’s 31 percent.

The three Democrats running to unseat U.S. Sen. Pat Toomey, R-Lehigh Valley, tried to differentiate themselves during an hourlong debate Tuesday at WTAE-TV's Wilkinsburg studio, highlighting what they'd do differently to improve life for Pennsylvanians.